Finding the Fourth Proportional to 686,206.26, 1,029,483.63 and 206,431.38
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Solution
The fourth proportional to 686,206.26, 1,029,483.63 and 206,431.38 is: 309,699.49
Step by Step Solution
- Step 1: Write the proportion equation
686,206.26 : 1,029,483.63 = 206,431.38 : x - Step 2: Convert to fraction form
686,206.26/1,029,483.63 = 206,431.38/x - Step 3: Cross multiply
686,206.26x = 1,029,483.63 × 206,431.38 - Step 4: Simplify right side
686,206.26x = 212,517,726,428.31 - Step 5: Solve for x
x = 212,517,726,428.31/686,206.26 - Step 6: Final answer
x = 309,699.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.